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/**
* Copyright (C) 2017 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/s/catalog/type_shard_collection.h"
#include "mongo/base/status_with.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/s/catalog/type_collection.h"
#include "mongo/util/assert_util.h"
namespace mongo {
const BSONField<std::string> ShardCollectionType::ns("_id");
const BSONField<UUID> ShardCollectionType::uuid("uuid");
const BSONField<OID> ShardCollectionType::epoch("epoch");
const BSONField<BSONObj> ShardCollectionType::keyPattern("key");
const BSONField<BSONObj> ShardCollectionType::defaultCollation("defaultCollation");
const BSONField<bool> ShardCollectionType::unique("unique");
const BSONField<bool> ShardCollectionType::refreshing("refreshing");
const BSONField<Date_t> ShardCollectionType::lastRefreshedCollectionVersion(
"lastRefreshedCollectionVersion");
const BSONField<int> ShardCollectionType::enterCriticalSectionCounter(
"enterCriticalSectionCounter");
ShardCollectionType::ShardCollectionType(NamespaceString nss,
boost::optional<UUID> uuid,
OID epoch,
const KeyPattern& keyPattern,
const BSONObj& defaultCollation,
bool unique)
: _nss(std::move(nss)),
_uuid(uuid),
_epoch(std::move(epoch)),
_keyPattern(keyPattern.toBSON()),
_defaultCollation(defaultCollation.getOwned()),
_unique(unique) {}
StatusWith<ShardCollectionType> ShardCollectionType::fromBSON(const BSONObj& source) {
NamespaceString nss;
{
std::string ns;
Status status = bsonExtractStringField(source, ShardCollectionType::ns.name(), &ns);
if (!status.isOK()) {
return status;
}
nss = NamespaceString{ns};
}
boost::optional<UUID> uuid;
{
BSONElement uuidElem;
Status status = bsonExtractTypedField(
source, ShardCollectionType::uuid.name(), BSONType::BinData, &uuidElem);
if (status.isOK()) {
auto uuidWith = UUID::parse(uuidElem);
if (!uuidWith.isOK())
return uuidWith.getStatus();
uuid = uuidWith.getValue();
} else if (status == ErrorCodes::NoSuchKey) {
// The field is not set, which is okay.
} else {
return status;
}
}
OID epoch;
{
BSONElement oidElem;
Status status = bsonExtractTypedField(
source, ShardCollectionType::epoch.name(), BSONType::jstOID, &oidElem);
if (!status.isOK())
return status;
epoch = oidElem.OID();
}
BSONElement collKeyPattern;
Status status = bsonExtractTypedField(
source, ShardCollectionType::keyPattern.name(), Object, &collKeyPattern);
if (!status.isOK()) {
return status;
}
BSONObj obj = collKeyPattern.Obj();
if (obj.isEmpty()) {
return Status(ErrorCodes::ShardKeyNotFound,
str::stream() << "Empty shard key. Failed to parse: " << source.toString());
}
KeyPattern pattern(obj.getOwned());
BSONObj collation;
{
BSONElement defaultCollation;
Status status = bsonExtractTypedField(
source, ShardCollectionType::defaultCollation.name(), Object, &defaultCollation);
if (status.isOK()) {
BSONObj obj = defaultCollation.Obj();
if (obj.isEmpty()) {
return Status(ErrorCodes::BadValue, "empty defaultCollation");
}
collation = obj.getOwned();
} else if (status != ErrorCodes::NoSuchKey) {
return status;
}
}
bool unique;
{
Status status =
bsonExtractBooleanField(source, ShardCollectionType::unique.name(), &unique);
if (!status.isOK()) {
return status;
}
}
ShardCollectionType shardCollectionType(
std::move(nss), uuid, std::move(epoch), pattern, collation, unique);
// Below are optional fields.
{
bool refreshing;
Status status =
bsonExtractBooleanField(source, ShardCollectionType::refreshing.name(), &refreshing);
if (status.isOK()) {
shardCollectionType.setRefreshing(refreshing);
} else if (status == ErrorCodes::NoSuchKey) {
// The field is not set yet, which is okay.
} else {
return status;
}
}
{
if (!source[lastRefreshedCollectionVersion.name()].eoo()) {
auto statusWithLastRefreshedCollectionVersion =
ChunkVersion::parseLegacyWithField(source, lastRefreshedCollectionVersion());
if (!statusWithLastRefreshedCollectionVersion.isOK()) {
return statusWithLastRefreshedCollectionVersion.getStatus();
}
auto version = std::move(statusWithLastRefreshedCollectionVersion.getValue());
shardCollectionType.setLastRefreshedCollectionVersion(
ChunkVersion(version.majorVersion(), version.minorVersion(), epoch));
}
}
return shardCollectionType;
}
BSONObj ShardCollectionType::toBSON() const {
BSONObjBuilder builder;
builder.append(ns.name(), _nss.ns());
if (_uuid) {
_uuid->appendToBuilder(&builder, uuid.name());
}
builder.append(epoch.name(), _epoch);
builder.append(keyPattern.name(), _keyPattern.toBSON());
if (!_defaultCollation.isEmpty()) {
builder.append(defaultCollation.name(), _defaultCollation);
}
builder.append(unique.name(), _unique);
if (_refreshing) {
builder.append(refreshing.name(), _refreshing.get());
}
if (_lastRefreshedCollectionVersion) {
builder.appendTimestamp(lastRefreshedCollectionVersion.name(),
_lastRefreshedCollectionVersion->toLong());
}
return builder.obj();
}
std::string ShardCollectionType::toString() const {
return toBSON().toString();
}
void ShardCollectionType::setUUID(UUID uuid) {
_uuid = uuid;
}
void ShardCollectionType::setNss(NamespaceString nss) {
invariant(nss.isValid());
_nss = std::move(nss);
}
void ShardCollectionType::setEpoch(OID epoch) {
invariant(epoch.isSet());
_epoch = std::move(epoch);
}
void ShardCollectionType::setKeyPattern(const KeyPattern& keyPattern) {
invariant(!keyPattern.toBSON().isEmpty());
_keyPattern = keyPattern;
}
bool ShardCollectionType::getRefreshing() const {
invariant(_refreshing);
return _refreshing.get();
}
const ChunkVersion& ShardCollectionType::getLastRefreshedCollectionVersion() const {
invariant(_lastRefreshedCollectionVersion);
return _lastRefreshedCollectionVersion.get();
}
} // namespace mongo
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